Home Wiring Basics

Home Wiring Basics

Your home’s wiring is like its nervous system, sending electrical charges and energy through your home. Wiring, however, has changed through the years, in some cases, pretty dramatically. Here are some home wiring basics you should know.

Why Your Wiring is So Important

Home wiring is covered by standards or codes that are required to be met. These electrical codes govern wiring and help keep homes safer. If changes are made that don’t meet these codes or standards, not only could your home become less safe, but it could become difficult to sell if caught by some future home inspector.

The Difference Between a Wire and a Cable

While often used interchangeably, there is a difference between a wire and a cable. A wire is a single conductor of electricity, whereas a cable is two or more wires contained in the same jacket.

Types of Wiring Through the Years

Like rings in a tree trunk, wiring can often tell the age of the home in which it is contained. Here are some examples through the years.

  • Knob and Tube Wiring– Extremely popular from the 1890s through the early 1900s, knob and tube wiring ran “hot” and neutral wires separately through the home using porcelain insulators and tubes. Wiring was often coated with a rubberized cloth coating. Many old homes still have remnants of this type of wiring in place, and in some cases, in use. It is considered unsafe by today’s standards because it is not grounded.
  • Flex or Greenfield Cabling– From 1920 through the forties, metal flex cables became popular in homes because they offered more protection for wires, flexibility, and when installed properly, were grounded. They still didn’t contain separate grounding at outlets, however.
  • Non-Metallic Sheathed Cable– Through the 1930s, a first generation of sheathed cables became popular for their ease of installation. They contain both hot and neutral wires wrapped in one cable of rubberized cloth. It was still ungrounded and was found to only have a lifespan of about 25 years. If found today, it should be replaced.
  • Metal Conduit– This metal tubing allowed for individual wires to be pulled through it and gained popularity in the 1940s. The metal tubing also provided an effective ground. Metal conduits are still used today in many homes, especially where wiring may be exposed.
  • Modern NM Cable– This more modern cabling has both hot and neutral wires that are contained in a durable and flexible vinyl material. It is long-lasting, flexible and easy to install and is found in virtually all modern construction.

Old wiring is one reason home insurance can be more expensive for older homes. If you are unsure of the age of the wiring in your home, contact a trusted electrical contractor.

If you haven’t had a homeowners’ insurance policy review in years, we invite you to contact one of our independent agents. Your review and price quote is free and comes without obligation.

Protect What You Love

Leave a Comment





Saints, Forts and Presidents, Why Our Cities are Named What They Are.

June 24, 2022

The Business Plan Debate

June 23, 2022

Facing the Inevitable

June 22, 2022

You Have More Impact on Your Car Insurance Rates Than You Think

June 21, 2022

Upgrading Your Garage Floor

June 20, 2022

The Hot Dog: Everything You Could Want to Know. …and More.

June 17, 2022

There’s Power in Asking for Help

June 16, 2022

What Grandparents Should Understand About Their Children and Grandchildren

June 15, 2022

Why Our Roads Are Where They Are

June 14, 2022

How to Handle Neighbor Problems When There’s No HOA

June 13, 2022

Four Amazing Years in Cinema History and the Films That Fueled Them

June 10, 2022

Benefits of Making Your Business More Environmentally Friendly

June 9, 2022

Relationship Building: The Power of Questions

June 8, 2022

Karmann Ghia: The Almost Forgotten, Slightly Exotic Volkswagen

June 7, 2022

What Your House Should Always Have “Extras” Of

June 6, 2022

Where Have all the Newspapers Gone?

June 3, 2022

Origins of Some Legendary Business Names

June 2, 2022

Does Your Child Have These Critical Characteristics?

June 1, 2022

How To Handle Yourself During a Traffic Stop

May 31, 2022

The Multi-Faceted Benefits of a Fence

May 30, 2022

What You May Not Know About Walt Disney

May 27, 2022

The Power of Personal Bests

May 26, 2022

What Are The Odds?

May 25, 2022

The Things That Protect You When Driving

May 24, 2022

All About Pets

May 23, 2022

The Midwest’s Playground: Wisconsin Dells

May 20, 2022

How to Handle Requests for Donations

May 19, 2022

Discovering More About The World Around Us

May 18, 2022

Songs About Cars

May 17, 2022

Nine Inexpensive Tips To Get Your Home Ready to Sell

May 16, 2022

Tools We Don’t Seem to Use In Business Anymore

May 12, 2022

Discovering Your Child’s Hidden Talents

May 11, 2022

Cities in the US With The Best Public Transportation Systems

May 10, 2022

Should You Buy or Should You Rent?

May 9, 2022

All About Banks

May 6, 2022

Simple Steps to Better Advertising

May 5, 2022

Six Things About Your Own Body You May Not Know

May 4, 2022

Collectible Cars: The 1978 Chevrolet Corvette Pace Car

May 3, 2022

Refinancing? Review Your Homeowners Insurance

May 2, 2022

The Secret Life of the Shopping Cart

April 29, 2022

Staying Within Budget with Minimal Risk

April 28, 2022

Tips for Staying Mentally Fit

April 27, 2022

What Cars No Longer Have

April 26, 2022

What’s Behind Red Doors?

April 25, 2022

What You May (Or May Not) Know About Major League Sports Team Names

April 22, 2022

How Business Insurance Can Help Your Company From Going Bankrupt

April 21, 2022

How Are You Feeling?

April 20, 2022

How Cars Depreciate

April 19, 2022

Increasing Rents: A Closer Look

April 18, 2022

“Sing My Name, Sing My Name”: First Names in Music

April 15, 2022

What is a “Small” Business?

April 14, 2022

Decreasing Term Insurance

April 13, 2022

Five Things Your Teen Likely Won’t Learn Through Drivers’ Education

April 12, 2022

The Explosion of Home Delivery Services

April 11, 2022

Places in the United States People Move to for the Weather

April 8, 2022

The  Business Hall of Fame

April 7, 2022

How Travel Enhances Life

April 6, 2022

Getting Your Car Insurance Rates on Track

April 5, 2022

Home Improvements That Provide the Best ROI

April 4, 2022

Famous Vegetarians Throughout History

April 1, 2022

Contact Us

-CONTACT US

OUR LOCATION

Have A Question?

We have an answer. Call us at 408-709-1177

598 E Santa Clara St Ste 205 San Jose , California 95112

408-709-1177
CA License #0G64896

© Copyright 2022 StarOne Valley Insurance Agency  |   All Rights Reserved
Site by ICA Agency Alliance

598 E Santa Clara St Ste 205 San Jose , California 95112
408-709-1177
CA License #0G64896

© Copyright 2022 StarOne Valley Insurance Agency  |   All Rights Reserved
Site by ICA Agency Alliance